MUCH respect to David Beckham and Posh Spice for daring to face spoof rapper Ali G in aid of Comic Relief.

But any fears that the pair were going to get an easy ride from the award-winning comedian were instantly dispelled before the Manchester United star had even opened his mouth.

Ali warned: ''Now, just because it's Comic Relief doesn't mean you can speak in a silly voice.'' And there was plenty more to come.

David couldn't hide his embarrassment when Ali asked him if he could sleep with his wife and whether he would rather be with Posh's fellow Spice Girl Emma Bunton.

Then he asked Victoria: ''So tell me, is your little boy starting to put whole sentences together?'' When the Spice Girl replied: ''He's learning the bits and pieces, so yeah,'' the comic shot back: ''And what about Brooklyn?''

Ali also quizzed Victoria about her weight, asking: ''Is you hoping to put on more weight, I mean obviously you don't want to go as far as Sporty Spice.''

And he managed to keep a straight face as he asked the couple: ''So they is some people who suddenly get loads of money who become very tasteless. How has you two managed to avoid that?''

He continued on a fashion theme when he said to Beckham: ''We has all seen pictures of you wearing clothes that was well embarrasing and made you a proper laughing stock. What's the name of that dress you wore?''

Beckham replied: ''Sarong''. Ali G fired back: ''Yeah I know it was so wrong.'' But, sadly for his legion of female fans, David refused to strip off in the name of charity.

Winding up the encounter Ali urged the audience to dig deep. ''If you do make a donation I will personally guarantee that not a penny of the money that you send to Lenny Henry will go towards feeding his missus,'' he said.

The interview will be broadcast on BBC1 on Comic Relief Night - Friday, March 16 - and is being billed as one of the comedy highlights of the evening.

There will also be a special One Foot in the Grave episode, a 10-minute EastEnders special and a Fast Show sketch featuring Robbie Williams.

Just moments after the recording for the annual fundraiser was finished, e-mails were circulating with details of the encounter.